Because they knew that America was going to get involved in the war at that point, and, as they were allied with the Japanese, they knew it wouldn't be on Germany's side.
The attack upon Pearl Harbor occurred before the formal Japanese declaration of war .
The attack on Pearl Harbor, and declaration of war by Congress.
There was no declaration before the attack on Pearl Harbor because the Japanese government believed a surprise attack would cripple the United States Pacific Fleet and prevent them from interfering with Japanese military expansion in the Asia-Pacific region. It was seen as a strategic move to gain an advantage in the early stages of the war.
The Japanese attack on Pearl Harbor followed by the Japanese declaration of war on the United States.
Pearl Harbor is how we usually refer to the Japanese surprise attack on US military installations in Hawaii (Pearl Harbor) and elsewhere in the Pacific on 7-8 December 1941. This is the action that brought the US into World War 2. Because of poor coordination within the Japanese Foreign ministry, the Japanese failed to issue a declaration of war just before the attack failed. The declaration was issued after the attack. Thus the attack was considered a sneak attack and "cowardly" and enraged the US populace. also how japan owned America
the Japanese did not lull the US into an attack on Pearl Harbor. the Japanese attacked Pearl Harbor, not the other way around.
japanese
Declaration of War.
December 7, 1941, was the date of the Japanese attack.
The Japanese attack on the US Fleet at Pearl Harbor.
the united states responded to the attack on pearl harbor.
the attack was tragic